发明名称 |
Method and device for determining disk size and stopping a rotating disk without using FG signals |
摘要 |
A method and device for determining the presence or absence of a disk and/or a disk size without using FG signals, are provided. The method includes placing a pickup at a first zone on the optical recording medium, the first zone located between an outer radius of a first recording medium type and an outer radius of a second recording medium type, where the outer radius of the second recording medium type is larger than the outer radius of the first recording medium type; detecting a reflected signal based on a returned beam from the first zone of the optical recording medium; and determining at least one of a size and an absence of the optical recording medium based on the detected reflected signal. Therefore, an FG sensor that is provided in a general disk device can be eliminated, thereby reducing the size and cost of a disk device.
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申请公布号 |
US2003174617(A1) |
申请公布日期 |
2003.09.18 |
申请号 |
US20020309202 |
申请日期 |
2002.12.04 |
申请人 |
KIM DONG SIK;SHIN TAE KI;JEONG MYEONG SU |
发明人 |
KIM DONG SIK;SHIN TAE KI;JEONG MYEONG SU |
分类号 |
G11B19/10;G11B19/12;(IPC1-7):G11B7/00 |
主分类号 |
G11B19/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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